Analytic method for GGE quasi-momentum distribution in degenerate free-fermion models plus a conjecture adjusting the quasi-particle entanglement formula, tested numerically with good agreement on local observables but small deviations on entanglement.
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Closed-form formula computes non-local magic for fermionic Gaussian states from two-point correlations in polynomial time.
Higher moments of the projected process ensemble reveal entanglement structures that distinguish chaotic from integrable dynamics more sharply than quantum dynamical or spatiotemporal entropies.
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Non-Local Magic Resources for Fermionic Gaussian States
Closed-form formula computes non-local magic for fermionic Gaussian states from two-point correlations in polynomial time.
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Diagnosing chaos with projected ensembles of process tensors
Higher moments of the projected process ensemble reveal entanglement structures that distinguish chaotic from integrable dynamics more sharply than quantum dynamical or spatiotemporal entropies.